<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <!-- 导入mapbox依赖 -->
    <script src='https://api.mapbox.com/mapbox-gl-js/v2.12.0/mapbox-gl.js'></script>
    <link href='https://api.mapbox.com/mapbox-gl-js/v2.12.0/mapbox-gl.css' rel='stylesheet' />
    <style>
        * {
            margin: 0;
            padding: 0
        }

        #map {
            width: 100vw;
            height: 100vh;
        }

        #btn {
            width: 200px;
            height: 50px;
            position: fixed;
            top: 20px;
            right: 50px;
            z-index: 1000;
        }
    </style>
</head>

<body>
    <button id="btn" onclick="clearMarker()">清除所有数据</button>
    <!-- 2、设置地图容器的挂载点 -->
    <div id="map">

    </div>
    <script>
        const gaode = {
            "version": 8,
            "sources": {
                "raster-tiles": {
                    "type": "raster",
                    "tiles": ["http://webrd01.is.autonavi.com/appmaptile?lang=zh_cn&size=1&scale=1&style=8&x={x}&y={y}&z={z}"],
                    "tileSize": 256
                }
            },
            "layers": [{
                "id": "simple-tiles",
                "type": "raster",
                "source": "raster-tiles",
                "minzoom": 0,
                "maxzoom": 22
            }]
        }
        /* 3、实例化地图 */
        mapboxgl.accessToken = 'pk.eyJ1IjoiY2hlbmdiZW5jaGFvIiwiYSI6ImNsODU3aGRiODA0Y2UzcHBzZmFlcmdqZ2sifQ.8k59W_pB_Riwe6o-MneRlA'
        const map = new mapboxgl.Map({
            container: "map",
            /* style-layers */
            style: 'mapbox://styles/mapbox/streets-v12',
            center: [114.30, 30.50],
            zoom: 7
        })
        let labels = [];
        /* 1、点击事件获取坐标 */
        map.on("click", evt => {
            var { lng, lat } = evt.lngLat;
            var marker = new mapboxgl.Marker({
                color: "red",
                draggable: true
            })
                // .setLngLat([lng, lat]);
                .setLngLat({
                    lng,
                    lat
                })
            labels.push(marker);
            marker.addTo(map)
        })
        /* 2、添加标注 */
        /* 3、点按钮删除标注 */
        function clearMarker() {
            labels.forEach(item => {
                item.remove();
            })
        }
    </script>
</body>

</html>